Bamboo charcoal fiber multilayer composite acoustic board

The utility model relates to a bamboo charcoal fiber composite board, in particular to a bamboo charcoal fiber multi-layer composite acoustic board which comprises a sound absorption layer and a base layer, the sound absorption layer is arranged on the top of the base layer, the sound absorption layer and the base layer are fixedly bonded, the sound absorption layer comprises a top plate, a sound absorption portion and grooves, and the grooves are evenly formed in the top face of the top plate. The sound absorption layer and the base layer are arranged, a double-layer composite structure is used for blocking sound waves, meanwhile, the sound waves are spread through solid and gas media through the cavity formed in the sound absorption part, the spreading capacity of the sound waves is weakened, the sound wave blocking and absorbing effect is achieved, the reflection part is installed in the groove, and the sound absorption effect is improved. The sound waves enter the cavity after being reflected by the refle